Antarctica (南极洲) is the coldest, driest and windiest place on our planet. What would it be like to live and work there? On Oct. 15th, 2019, 50 Chinese scientists set sail from Shenzhen, heading for Antarctica. This was our country's 36th Antarctic expedition. The ship, Xuelong 2, is the first icebreaker made in China. Xuelong 2 is one of the world's best research icebreakers.
It can sail to any place around the world in one trip without refueling (加燃料). It can work in temperatures as low as -30%℃. It is the first in the world to use two-way ice-breaking technology, which means that it can break the ice while moving forward or backward.
Because of Antarctica's special environment, scientists from around the world have been there to do studies for many years. The study of Antarctica's geology (地质) is also important. Rock in Antarctica can tell scientists what the weather was like a long time ago. And they can help scientists understand how the earth has changed over time. There are also many wild animals, such as penguins and seals. Scientists can learn how animals live in cold places by studying them.
As we all know, life in Antarctica is not easy－it's cold and sometimes dangerous. But scientists say it's still quite fun. For example, some scientists study how penguins walk, what they eat and why they move from one place to another. They are excited to see the cute animals playing around. They hope their studies can help protect them.
Xuelong 2 finished its tasks and returned to Shanghai on April 22, 2020.
1.How many Chinese scientists headed for Antarctica on Oct 15th, 2019?
A.Fifteen. B.Nineteen. C.Fifty. D.Two hundred.
2.Xuelong 2 is ________.
A.the first icebreaker made in the world B.the first in the world to use two-way ice-breaking technology
C.one of the best research icebreakers in China D.the second icebreaker made in China
3.According to Paragraph 3, scientists study________ in Antarctica.
A.how the weather has changed B.the geology and wild animals
C.the original plants D.how the rock disappeared
4.Which of the following best describes scientists’ life in Antarctica?
A.Not easy but still quite fun. B.Dangerous and boring.
C.Hard and dangerous. D.Safe but quite tiring.
5.When did Xuelong 2 return to Shanghai from Antarctica?
A.In mid-March 2020. B.In late March 2020.
C.In mid-April 2020. D.In late April 2020.
When we were little kids, we knew about traffic lights. The color red means stop, the color green means go and the color yellow means slow down or show some caution (小心). But why are these colors used for traffic lights? Why couldn't they be colors like blue, brown or orange? Here is the history of the colors for traffic lights.
Well, it's important to know that before there were traffic lights for cars, there were traffic signals (信号) for trains. At first, railway companies used red to mean stop, white to mean go and green to mean caution. But train drivers had a few problems with the color white meaning go. They could easily mistake stars at night for the signal to go. So railway companies moved to the color green to mean go, and the color yellow to mean caution.
The color red has a lot to do with danger. Red is the color with the longest wavelength (波长), so it can be seen from a greater distance than other colors. The color yellow is used to mean caution because it has a little shorter wavelength than red, but not as short as green.
Believe it or not, yellow was once used to mean stop. Back in the 1900s, some stop signs were yellow because they were easier to see in poorly-lit areas. But people once again used red to mean stop after more highly reflective (反光) materials were developed. Since yellow can be seen well at all times of the day, school zones and school buses continue to be painted yellow.
Traffic lights really came a long way.
From: https: //www.rd.com
1.The earliest traffic signals were for trains.
2.The color blue was once in early traffic signals.
3.The color green can be seen from a greater distance than other colors.
4.Back in the 1900s, yellow was used to mean stop.
5.School buses are painted yellow because this color can be seen at all times of the day.
If you’re a teen who thinks you need expensive gym membership to get into shape, think again. You likely have all the equipment you need right in your own _______.
Your home is full of opportunities to develop your muscles and get fit. Start early in the morning to refresh yourself and you'll be full of energy all day. _______ you get out of bed, move the pillow from under your head and do a set of 20 sit-ups. With your heart beating _______, get up and do 20 jumping jacks (开合跳). Stretch (伸展) for five minutes to further _______ up your muscles, and then run slowly in place for a full minute.
Besides, add weight exercise to your daily exercise for _______ calories. Place weights (哑铃) on the floor in front of your feet. Keep your back straight and your head up, bend your knees and pick up the weights for an overhead press. Bend your arms and push the weights straight _______ your head. Lower the weights to shoulder _______ and then lift and lower them for 8 to 12 times.
Don't get bored with your home workout _______ doing the same exercises for too long. Pick up a jump rope and _______ for two minutes. With your heart beating faster, run in place for ________ two minutes. Drop to the floor and do "spidermen". Place your hands on the floor under your shoulders and stretch your legs out behind you with the weight on your toes.
Try these indoor activities and get fit!
From: https: //www.livestrong.com
1.A.home B.school C.classroom D.hand
2.A.When B.Until C.Before D.After
3.A.higher B.harder C.less D.louder
4.A.look B.stay C.warm D.put
5.A.recycling B.helping C.inventing D.burning
6.A.along B.above C.inside D.beside
7.A.height B.body C.weight D.size
8.A.without B.to C.instead D.by
9.A.swim B.lie C.jump D.relax
10.A.other B.more C.else D.another
假如你是李明,你最近很不开心。请你根据下面的要点提示,用英文给你的笔友John写一封电子邮件,告诉他你遇到的问题,请求他给你一些好的建议.
要点提示：1.作业多,几乎没有时间休息；2.学习很努力,但考试成绩不好；3.压力大,经常感到紧张；4.上周进行的英语考试没有及格,感觉同学们都嘲笑你.
要求：1.所写内容应包括所给要点,可适当发挥；2.不得出现真实的人名、校名等相关信息；3.词数： 100词左右。
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1.It's a friendly way people in the United States greet each other. But "How are you?" is also a very unusual question. It's a question that often doesn't have an answer.
When a person meets a friend on the street and asks "How are you?", the person doesn't really expect to hear an answer such as "I really don't know what's wrong with me.I thought I had a cold.I look some medicine, but that didn't help much, so I'll go to the doctor." The person who asks"How are you'" expects to hear the answer "Fine." even if the other person isn't! The reason is that "How are you?" isn't really a question and "Fine" isn't really an answer. 2.
Sometimes, people also don't say exactly what they mean. For example, when someone asks "Do you agree?", the other person might be thinking "No, I disagree. I think you're wrong." But it isn't very polite to disagree so strongly, so the other person might say, "I'm not so sure." 3.
People also don't say exactly what they are thinking when they finish conversations with other people. For example, many conversations over the phone end when one person says, "I've got to go now." Often, the person who wants to hang up gives an excuse： "Someone's at the door." I've got to put the vegetables away." "Something is burning on the stove!" 4.Perhaps the person who wants to hang up simply doesn't want to talk any more, but it isn't very polite to say that. The excuse is more polite, and it doesn't hurt the other person's feelings.
Whether they are greeting each other, talking about an opinion, or ending a conversation, people often don't say exactly what they are thinking. It's an important way that people try to be nice to each other.5.
A.We must learn when to keep silent.
B."How are you?" is a nice question.
C.And it's all part of the game of language!
D.The excuse might be real, or it might not be.
E.It's a nicer way to say that you don't agree with someone.
F.People sometimes shake hands when they meet each other.
G.They are simply ways of greeting people and saying "Hello."
当今，对中国传统文化感兴趣的外国人越来越多。
Nowadays, more and more foreigners are getting_____in____________Chinese culture.
